During which interval was the bicyclist speed the greatest? i am not sure about my answer.

ANSWER

The correct answer is A

EXPLANATION

The slope between each interval tells us the speed.

The greatest slope is where the speed is greatest.

For the first hour to the second hour,





For the second hour to the fourth hour,





For the fourth hour to the sixth hour,





For the sixth hour to the eighth hour,





Therefore the bicyclist's speed was greatest during the first hour to the second hour.